Locomotive-boiler furnace.



C. B. MOORE. LOCOMOTIVE BOlLER FURNACE. APPLICATION FILED DEC. I8,`I9II;

.Patented'May 4, 1915.

UNrrED STATES rn'riiinr cerros.

CHARLES B. MOORE, OF EVANSTON, ILLINOIS, ASSIGNOR., BY MESNE ASSIGNMENTS,

TIO AMERICAN ARCH COMPANY, OF NEW YOI'K, N. Y., A CORPORATION OF DELA- WARE.

To au whom t may concern.'

Be it known that I, CHARLES B. Moonn, a .citizen of the'United States, and a resident of the city of Evanston, county of Cook, and State of Illinois, have invented certain new and luseful Improvements in Locomotive- BoilerFurnaees, of which the following is a specification. 3

My invention i'elates to improvements 1n 'locomotive furnaces and has particular refcess to the flue sheets and side sheets of the firebox to effect necessary repairs thereof andof the stay bolts and to provide an arch of a form that shall materially assist in the adinixing of the lireboX gases and the ignition of the gases and the fuel particles car- 'ried thereby.

A further object of my invention is to provide an improved refractory arch construction having the characteristics above outlined whicli shall be particularly adapted for the installation of arches in locomotive boiler fireboxes that are equipped with a plurality of circulating or arch supporting tubes. l

My invention consists in the several im- Y proveniente, the various featliires-'of construction and the combinations of parts by means of which the above ai'idrfotligr objects are attained ilind, all as hereinafter described and paitii-.ulfarly pointed out in' the appended claims.

My invention lwill be more readily underi stood by reference to the accompanying drawings forming a part of this specifica-- tion and in which;

Figure l is a vertical central longitudinal i section of a locomotive boiler firebox equipped with a refractory arch embodying my invention; Fig. 2 is a horizontal sectional view of the firebox on the li'ne 2-2 of Fig. 1; Fig. 3 is a transverse vertical section of the fire box on theline 3 3 of Fig. 1; Fig.' 4 is 'a detail transverse section of the mh on the une a- Ji of rig. 1 mig. 5

Specification of Letters Patent.

invention arev 1.ocoi/Io'rIvE-isonarrt FUaNAcn.

rammen May 4, i915.

Application mea December 1a, 191i. serial No. 666,351.

panel bricks; Fig. 8 is a side elevation of the L brick shown in Fig. 7; Fig. 9 is an end ele vation of the brick shown in F ig. 7; Fig. l0

is a top-plan view of one of the locking bricks; Fig. 11 is a side elevation of the locking brick; Fig. 12 is an end elevation of- E thevlocking brick.; Fig. 13 is atop plan view 1 of the bricks used lfor spacingr 'the arch from the flue sheet; Fig. 14 isa side elevation of thespacing brick; and Fig. 15 is an end ele#` p vation ofthe spacing brick.

' My invention is capable of embodiment in.` I

arches which occupy various positions in the 'irebox and which have dilerent specific functions. I have, however, chosen toY illustrate my invention as applied to the -frina-A f however, be understood that my invention. is not limited to this specific form or posi tion arch.

ltion of a so-called front` arch. ltshonld,

A so-called front arch usually occupies an l inclined position in the forward end of the frebox in contact ith or spaced -rearwardly a short distance rom the i'iue 'sheet and it serves to obstruct br baliie the direct ow of the gases of combustion from the fuel bed to the fines and cause themto travel back and forth in the tircbox and .thereby distribute their heat evenly over the interior surface of the iirebox and particularly throughout the length of the crown sheet.

A particular feature of front arches constructed in accordance with my invention, is that in addition tc?,I serving as a baiiie for the gases of eombustien, they serve to break up the strata of gases@ and thereby aid in commingling and admixing the air and the combustible gases causing substantially complete combustion of they fuel before the gases escape from the Firebox through the lues.

Front arches constructed in accordance with thereafter assistin the ignition of the A,gases and the fuel particles carried thereby.

A locomotive irebox as illustrated' in the drawingsis made up of a iue sheet 2..

k{il} oiispa'n bricks end I prov side sheets Jr-8, e crown sheet 4l and e, rear sheet 5, The .iireboii hes e grate 6 and the rear sheet is provided. with fool door 7. Fines 8 lead forward from the i'iue sheet. The firebonillustrated eqiiipped with ioni' arch or circulating tubes 9, the seme extending 'from 'the leiver portion of the duc sheet to the lupper portion of the reer sheet end serving to increase :the circulation of Water between the front and rea-r Water legs of the iirebon e. particular feature of my invention resices inthe tact that vthe arch is made up or built cit but two terms of brick, one form being a span or supporting brick 'and the other being panci or cover brick. The supporting bricks it) are ci' a length suiicient to span from tube to tnbe and rest thereon. These bricks limited in by the feature that they shall not be too heavy to be readily placed in position upon the tubes and that they shall be capable of being readily passed through the tire door into the lirebcxq and furthermore that they shall be as large as consistent with. thc foregoing featuress 'their length being rieten mined as stated the' :feature that they shell be long enough to span from tiibe te tube. I arrange these bricks in 'tiwisverse rows extending across the tlreborn previde these bricks with reversed interlocking ribs or tongues 1l and sockets :it their ends so termed that when these bricks are other and the adjecent bricks el? e transve row thereby maintain each other in position upon the tubes. I build the arch of severel of these transverse rows of bric spaced apart .longitudinally upon. the ribes I maintain these rows in their spaced relation b means of cover or vmnel bricks i3.,

l i Lockedat from one point et view, the panel bricks may be vseid te be enough to lill the spaces between the transverse rows 'of supporting bricks and overlap their ends thereon and these anel bricks nrovided with. transverse abutment shoulders le iipon their lower faces which are a to eogage the sides oit the s ipportiug end thereby maintain the transverse r supporting bricks in proper relat tion. In other Words these pene-l br. er- .ranged between the rows ci" supporting bricks and ere provided. upon. their ende with projecting flanges orteilsr es adapted to rest upon 'the supportn'rbricks and thereby hold the panel bricks in proper pcsition I make the'panel brickso? suoli e that e numb r of them ere readired to ill eeeh et the between adjacent owe idcthe edjiecect h bali tongues edges of the panel brick: iv liti md cc nplomentery lient p grooves l? Wliereby these icks ere adapted to interlock with each er et their ediecent edges prefer to provide each span brick With a shallow pocket or depression 18. in one face of large extent and with two similar shallow pockets i9 of less extent in its other fece. This construction provides each span brick with a cross bar 2O on one fece and with end anges er Walls 2l on its opposite face, and I provide the underside ot the panel bricks with similar shallow pockets or cavif. tiesft. This formation of arch bricks provides the arch with a plurality of shallow ges mixing pockets and With a plurality of subsidiery ges detlecting surfaces arranged et many adverse angles. lThe ideaJ of :r0- viding the span bricks with shallow pockets in both faces is for the purpose oi' providing the arch with these shallow mixing pockets throughout its under surfaceA regardless et the position in which the span bricks are placed, that is Whether oneA face er the other :tace is turned downwardly. lThe arch as a Whole rests upon the tubes in substantially e single plane and extends laterally substantielly co-equal -with' the lateral extent oi the tubes 9 and I maintain the ereh in position transversely in the firebox by means ci locking bricks 23 which I ar range between the rows el panel bricks and the side sheets oli the iireboxl These locking bricks are provided with tongues and grooves upon `one edge similar tothe tongues vand grooves upon the edges `of the .panel bricks end are adapted t0 interlock tlierewith and these panel bricks are preferably of such size that When placed in position with their inner ends in proper contactwith the panelbricks. they occupy upwardly and outwardly' inclined4 positions with their cuter en dssfresting against the side-sheets of the iirebei, end 'for the purpose of making it convenient to lit these bricks properly into position and in proper Vwedging contact with'the side sheets of the irebox, I provide their outer ends with relatively narrow projections or tongues 24 which may be readily chipped oli or cut to the proper length so that th se bricks Wedgingly enthe row of panel bricks with `the side sheet and thus lock the arch transversely in the firebox.

It is te be note/Lthat the cover bricks are both thin and light end hence add little' weight to theerch itself and being thin and they aid in igniting the fuel position.

casacca close to or Contact with the flue sheet and resting upon twoof the tubes. rlhis brick is placed in position with the tongues at its ends projecting upwardly and l thereafter complete this row of transverse bricks by placing one of these supporting bricks, which is substantially identical with the brick already placed, at each end thereof intericcking the ends of these bricks together. That is the end bricks are reversed ink posi 'tion relatively to the center brick. 'When it is desirable to lace these bricks at a distance from the iue sheet, ll arrange spacing bricks 24 between the lower edges oi these supporting bricks and the Hue sheet. These spacing bricks are arranged to be supported uponthe tubes and each thereofl is provided on its underside with a groove 25 which substantially lits the tube and the end of the brick which contacts with the supporting brick is provided with a pair of projecting tongues 26 which are adapted to project beneath the supporting brick, one on each side of the tube and thereby lock the spacing brick in position. The weight of the arch also aids in holding the spacing bricks in After the first or lower trans verse row of supporting bricks has been placed in position, l arrange a second transversei row of su )porting bricks upon the tubes above the rst row and spaced therefrom and i hold this second row in position by means of a transverse row of the panel bricks arranged between the first and second rows or' supporting bricks. In some instances an arch thus constructed is of suiiicient length to cause the proper circulation of Firebox gases for the purpose of producing thc -most economical combustion of the fuel. ln other instances it is necessary to extend the arch rearwardly a greater distance. Usually the rear end of the arch is positioned substantially at the middle of the lirebox and in the arch illustrated have shown it as being made up of a third trans-y verse row of support bricks maintained in position by means of a second row of the panel or cover bricks. The arch as thus made consists oi' a. plurality oic transverse rows ot' supporting bricks interlocked togather and thereby held against relative longitudinal displacement or scoaration and these rows of supporting bricks v`are spaced apart and maintained in their spaced relation by transverse rows of interlockcd panel or cover bricks and the arch as a whole is hclfl against transverse movement in the lircbox by means of the locking bricks which are Wedgingly interposed between thcla-teral cflges of tbc arch and thc sido sheets oi the livebox. Ao arch thus constructed is in a scuse iloxiblc, for the contacting surface of the various bricks are more or less protected against tbc ccmcnting action oi" the slag., which Soon unites an' arch ot ordinary coustruction into a solid or rigid mass. The arch being thus iieXible, can accommodate itseltl to slight changes of its supports or dimensions of the irebox' induced by changes of temperatureor pressure without the destruction usual in arches ascommonly constructed.

it will now be seen that my arch being made up of a plurality of individual bricks which can be readily placed in position, arches can be made or built with the expenditure of comparatively little time or labor. Furthermore, it will beV seen that parts of the Varch can be easily removed withoutdisturbing the arch as a whole, for the purpose of effecting necessary repairs to the stay bolts or sheets of the virebox. An-

other. advantageous feature of these arches resides in the fact that the supporting bricks are recessed or paneled in both `faces and therefore regardless of the face of the bricks, which is turned downwardly, the whole under surface of the arch is provided with-subsidiary gas mixing pockets and furthermore as the panel bricks extend between the upper edges of the supporting bricks, and they do not completely lill these spaces, they do in fact provide gas mixing channels or recesses which extend transversely across the entire width of' the arch and these transverse channels also aid in the admixing and commingling'of the irebcx gases.

As various modiiications of my invention will readily suggest themselves to one skilled in the art, l do not confine or limit my invention to the specific structures hercin shown and described.

I claim:

1. A locomotive boiler iireboX having a plurality olf substantialy parallel inclined arch tube?, in combination with a rcf'ractory archfbody resting on said tubes, said body comprising a plurality of parallel transverse rows of slab-like supporting bricks having complementary grooves and ribs extending across their ends and by which they are interlocked to prevent longitudinal separation thereof, said ross be ing spaced apart upon the tubes and a piuA rality of cover or panel bricks. interposed, between, resting upon and spacing said rows apart.

2. A locomotive boiler firebox having a plurality of substantially parallel inclined arch supporting tubes, in combination with a. refractory arch therein supported by said tubes, said arch comprising'a plurality of pm'allel rows of reversible supporting bricks, said bricks being identical in form and having transverse projections and complementary grooves extending across their ends and adapting'them to interlock with cach other and mutually prevcnt their rela-g1, tivo movement transversely in the firebof, said rows being spaced apart upon the tubes and thinecover bricks filli'ng the spaces between therows of supporting bricks and holding them in their spaced relation.

3. A locomotive boiler firebox having a plurality of substantially parallel inclined water circulating tubes therein, in'combination with a refractory front arch resting on said tubes'and against the flue sheet, said arch comprising a lurality of transverse rows of identicalsupporting bricks.,A

- plurality of substantially parallel inclined arch tubes therein, inlzcombinationf with a refractory front arch ,esting on said Vtubes and against the iiue/ sheet, said arch comprising a plurality of substantially parallel transverse rows fof supporting bricks resing on said tubes, said bricks being sub' stantially identical infoim and each thereof having half thickness horizontal flanges on its ends and vertically extending complementary transverse tongues and grooves extending the length ot said flanges adapted when the bricks are arranged in alternate reversed positions to mutually interlock and rprevent the separation of the bricks of said rows transversely of the fireboX, relatively thin cover bricks interposed between the upper edges of said transverse rows filling the spaces between them and holding said rows separated., and locking bricks wedgingly interposed between the side edges of said arch body and the sitle sheets of the iireboX.

In a locomotive Iirebi x, the combination with a plurality of lrngitudinally arranged inclined water circ lating tubes, of a .refractory front arch cc uprising a plurality of rows of irebrick, arranged transversely thereinA and restin on said tubes,

said rows of -ire bricks being spaced apart longitudinally` of'y the firebox and the individual bricks of said rows having complementary hooks and grooves extending across vtheir ends whereby the bricks are in terlocked at their ends and thus held against separation transversely of the irebox and transverse rows of thin cover bricks interlocked at their edges to prevent relative vertical movement thereof, said rows of cover bricks: being interposed, between the rows of supporting bricks filling the spaces a half tongue fand therebetween and holding said rods of supporting Vbricks separated, and locking bricks wedgingly interposed between the rows of lcover bricks and the side sheets of the fire- 6. A locomotive boiler irebox having a plurality of substantially inclined water cirl the same having a vertically extending transverse tongue at its outer edge and provided with a transverse groove adjacent tol said tongue, the tongues and grooves of adjacent ends of supporting bricks being adapted to mutually engage each other and prevent 'the separation of the supporting bricks transversely of the firebox.

7. A locomotive boiler firebox having a plurality of substantially parallel-inclined arch tubes therein, in combination with a front arch composed of a plurality of sub1 stantially parallel transverse rows of sup porting bricks, sai'd rows being spaced apart and held in spaced relation by transverse rows of thin cover bricks interposed be;

tween the upper edges of adjacent rows of` supporting bricks, said supporting bricks being rectangular and substantially identical in form, each-supporting brick being cut away across each end to form half thickness flanges thereat` and having a vertically extending transverse rib at its outer edge and a transverse Agroove adjacent to ,said rib adapted to receive the comple ntary rib of the adjacentl brick, the a ternate bricks in the rowvbeing reversed in posi-a tion and the transversey ribs thereon being adapted to interlock the bricks andprevent the separation thereof transverselyof ffirebox. rl 8. Amarginal composed ofy refractory material having pointed end for engagement with. a side sheet and on its opposite end provided with 'a half groovel to intel".

ick for locomotive arches lock with a correspondingly formed archy body brick. i j y In testimony wligreof, I have hereunto set my hand this thday of December, v1911, in the presence of, two subscribing witnesses.l

1` CHARLES B.l MOORE. Witnesses:k "i j CHARLES; GILBERT HAWLEY, i EDWARD ';""W1Lson.

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